Wood paving-block.



- J.A.C0Gs LL. v WOOD PAVING L GK.

IIIIIIIIIIIIIIIIIIIIIIIIII 1.

Fig] i0 Witnesse; Inoentor;

JAMES A. COGSWE-LL, 0F BOSTON, MASSACHUSETTS.

WOOD PAVING-BLOCK.

Speccaton of Letters Patent.

Application filed June 17, 1911.

Patented Feb. 20, 1912.

serial No. 633,808.

To all whom it may concern:

Be it known that I, JAMES A. CoGswELL, residing at Boston, in the countyof Suolk and State of Massachusetts, have invented an Improvement inVood Paving-Blocks, of which the following is a Specification.

This invention relates to paving-blocks, and has for its object toprovide a block with an improved form of grid projecting from itstread-face a short distance to be engaged by the calks of horse-shoes,and thereby prevent horses from slipping.

In the present embodiment of my invention the block, usually of wood,has formed in its tread-face, a kerf extended from end to end thereofhaving parallel sides, which is adapted to receive a grid. The grid ismade as a iiat bar or strip of iron or other suitable material, havingparallel sides, which is made of a thickness to snugly t the kerf, andof a width greater than the depth of thekerf, so that when fittedtherein its upper edge portion will project therefrom a short distance,and of a length somewhat less than the length of the block, so that whenarranged in the kerf spaces will be formed at one or both ends of.thegrid which admit of the entrance of a hook-like tool, for the purpose oflifting the grid by a prying action in order to remove it, thusproviding for the substitution of new grids when required. One end ofthe grid is under-cut or chamfered oftl at its under side to enable thehook-like tool to engage the grid. When the blocks are laid the spacesin the kerf at the ends of the grid are iilled with cement, which actsto bind the grids in place, the cement serving as a locking-key toconnect two adjacent blocks, and thus assist in holding them againstdisplacement.

Figure 1 is a plan view of a section of pavement composed ofpaving-blocks embodying this invention. Fig. 2 is a verticallongitudinal section taken on the dotted line 2 2, Fig. 1. Fig. 3 is anend view of the block.

The block 10 is composed of wood or other suitable material, and ofsuitable dimensions to serve as a paving-block. It has formed in itstread-face a kerf 12 which extends from end to end of the block. Saidkerf may be formed by any suitable means, and preferably has parallelsides adapting it to receive a grid having parallel sides. The grid 15is composed of iron or other suitable material, and is made of athickness to snugly fit the kerf and of a width greater than the depthof the kerf, so as to project therefrom, when bottoming therein, and lofa length somewhat less than the length of the block, so that when drivenor fitted into the kerf there will' be a space left in the kerf at oneor both ends of the block, according to the disposition of the gridwit-h respect to the block. The grid is under-cut or chamfered oi'l atone end'as at 16. When the grid is driven into the kerf, so as to bottomtherein, its upper edge portion will project a short distance above thetread-face for engagement therewith of the calks of horse-shoes.

The pavement which may be composed entirely or for the most part of myimproved blocks is arranged in rows, their ends abutting together, andwhen so laid the spaces in the kerf at the ends of the grids are filledwith cement which soon becomes hard and forms a locking-key for theadjacent blocks, and also consists in holding the grid in place.

When it is desired to remove a grid the cement filling is removed and ahook-like tool, of any suitable description, may be used, which isprojected down into the space at the under-cut end of the grid, andbrought into rm engagement therewith, and then by a prying action of thetool the grid is lifted.

I claim 1. As a new article lof manufacture, the paving-block hereindescribed consisting of a block having a kerf in its tread-face, eX-tended longitudinally with respect to the block from end to end thereof,a metal grid made of a thickness corresponding to the width of the blockand of a depth greater than the depth of the kerf, and of a length lessthan the length of the kerf, said grid being fitted into the kerf so asto leave a space at one or both ends thereof, adapted to be filled withcement when arranged adjacent another block.

2. As a new article of manufacture, the paving-block herein describedconsisting of a block having a kerf in its tread-face eX- tendedlongitudinally with respect t0 the block from end to end thereof, ametal grid of a thiclniess corresponding to the width of the block, andof a depth greater than the depth of the kerf, and of a length less thanthe length of the kerf and having one end under-cut, said grid beingfitted into the kerf so as to leave a space at one or both ends thereofadapted to he filled with cement When 'arranged adjacent another block.

3. A section of street pavement composed of blocks arranged in a row,each block hav- 5 ing a kerrl in its tread-face and a grid arrangedtherein and projecting therefrom Which is made of less length than thelength of the block, thereby leaving spaces in the kerf at the ends ofthe block, and cement- 10 keys arranged in said spaces which connect theblocks together, substantially as described.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing Witnesses.

JAMES A. COGSWELL. lVitnesses B. J. NoYns7 H. B. DAvIs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

